Overall on your list Forester have good visibility compare to other,modern uncle looks exterior if you have very good diy mechanic skills can order part directly from japan without via local Subaru after out of warranty

Is okay go for turbo variant, as usual most driver afraid of boxer legendary issue, but if you like it can maintain it won't be issue

Most common issue if you search at google

Subaru uses the Boxer engine which has a horizontal design and pistons lay flat in the cylinder. When the engine is turned off, the fluids tend to pool next to the head gaskets instead of draining, and over time acids in the fluids eat away at the seals. The gaskets deteriorate and oil and coolant fluids start leaking

If you not a Subaru master race just avoid about it,